ssh in OpenSSH before 10.4 can have a use-after-free when a server changes its host key during a key re-exchange. (This outcome occurs only on the client side.)
CVSS Details
- CVSS 3.1 Base Score: 9.4
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade openssh-serverUpgrade openssh-askpassUpgrade pam_ssh_agent_authUpgrade opensshUpgrade openssh-clientsUpgrade openssh-keycat | Aug 2, 2026 | Jul 29, 2026 |
| Alpine Linux | — | Upgrade openssh | Sep 1, 2026 | Jul 8, 2026 |
| Amazon_linux_2023 | — | Upgrade openssh-debuginfoUpgrade openssh-clients-debuginfoUpgrade pam_ssh_agent_auth-debuginfoUpgrade openssh-clientsUpgrade opensshUpgrade openssh-server-debuginfoUpgrade openssh-keycatUpgrade openssh-debugsourceUpgrade pam_ssh_agent_authUpgrade openssh-keycat-debuginfoUpgrade openssh-sk-dummyUpgrade openssh-serverUpgrade openssh-sk-dummy-debuginfo | Aug 10, 2026 | Jul 8, 2026 |
| Arista Eos | — | Upgrade to a remediated EOS release. See https://www.arista.com/en/support/advisories-notices/security-advisory/24515-security-advisory-0147 for the list of fixed versions. | Aug 26, 2026 | Aug 25, 2026 |
| Ibm Aix | — | Apply the fix or workaround for aix_vios_advisory | Aug 16, 2026 | Aug 14, 2026 |
| Openbsd Openssh | — | Upgrade to OpenSSH version 10.4 | Aug 18, 2026 | Jul 8, 2026 |
| Redhat Openshift | — | Upgrade rhcos | Aug 19, 2026 | Jul 8, 2026 |
| Redhat_linux | — | Upgrade openssh-clientsUpgrade openssh-keysignUpgrade pam_ssh_agent_authUpgrade openssh-keycatUpgrade openssh-clients-debuginfoUpgrade openssh-keycat-debuginfoUpgrade openssh-keysign-debuginfoUpgrade openssh-serverUpgrade openssh-debuginfoUpgrade openssh-debugsourceUpgrade openssh-sk-dummy-debuginfoUpgrade opensshUpgrade openssh-server-debuginfoUpgrade openssh-askpass-debuginfoUpgrade openssh-askpassUpgrade pam_ssh_agent_auth-debuginfo | Jul 17, 2026 | Jul 8, 2026 |
| Rocky_linux | — | Upgrade pam_ssh_agent_authUpgrade openssh-serverUpgrade openssh-keycat-debuginfoUpgrade opensshUpgrade openssh-clients-debuginfoUpgrade openssh-server-debuginfoUpgrade pam_ssh_agent_auth-debuginfoUpgrade openssh-debugsourceUpgrade openssh-askpassUpgrade openssh-clientsUpgrade openssh-askpass-debuginfoUpgrade openssh-debuginfoUpgrade openssh-keycat | Aug 3, 2026 | Jul 30, 2026 |
| Ubuntu | — | Upgrade openssh-clientUpgrade openssh-server | Jul 13, 2026 | Jul 8, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jul 22, 2026 | Jul 8, 2026 |
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